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authorFrank Pavlic <fpavlic@de.ibm.com>2006-02-07 17:04:36 +0100
committerJeff Garzik <jgarzik@pobox.com>2006-02-17 16:16:39 -0500
commit0d613a27cc753bfacd20e6eaa2183bb7fef4c76e (patch)
tree670fc8e8a703874c2c7b8626fb646679389fce1b /drivers/s390/net/lcs.h
parentca5b0ec8ae9f11c85d1f27b19f182a054303f324 (diff)
[PATCH] s390: lcs performance enhancements
[patch 1/2] s390: lcs performance enhancements From: Klaus Wacker <kdwacker@de.ibm.com> - When flood pinging (with large packet size) an LCS device, about 90 % of all packets are dropped by driver. - increased number of lcs IO buffers to 32. - use netif_stop_queue/netif_wake_queue in lcs_start_xmit routine - don't lock the whole xmit routine but just the piece of code where tx_buffer is touched. Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> diffstat: lcs.c | 31 +++++++++++++++++-------------- lcs.h | 2 +- 2 files changed, 18 insertions(+), 15 deletions(-) Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/s390/net/lcs.h')
-rw-r--r--drivers/s390/net/lcs.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/s390/net/lcs.h b/drivers/s390/net/lcs.h
index 08e60ad4391..2fad5e40c2e 100644
--- a/drivers/s390/net/lcs.h
+++ b/drivers/s390/net/lcs.h
@@ -95,7 +95,7 @@ do { \
*/
#define LCS_ILLEGAL_OFFSET 0xffff
#define LCS_IOBUFFERSIZE 0x5000
-#define LCS_NUM_BUFFS 8 /* needs to be power of 2 */
+#define LCS_NUM_BUFFS 32 /* needs to be power of 2 */
#define LCS_MAC_LENGTH 6
#define LCS_INVALID_PORT_NO -1
#define LCS_LANCMD_TIMEOUT_DEFAULT 5